Fluid reaction surfaces (i.e. – impellers) – With weight-balancing means
Reexamination Certificate
2005-09-13
2005-09-13
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With weight-balancing means
C416S21000A, C416S243000, C416SDIG003
Reexamination Certificate
active
06942457
ABSTRACT:
Fans according to some embodiments of the present invention include a spider, a central hub coupled to the spider, and two or more fan blades. One or more fan design features can be employed (alone or in combination) in the fans of the present invention, including the use of spider arms and/or fan blades having twisted shapes, spider lobes having cupped shapes, spiders and/or fan blades having thinner dimensions than conventional spider and fan blades in similarly-sized fans, fan blades having narrower widths, larger camber-to-chord ratios and/or tapering camber-to-chord ratios, and embossments located on the spider or the fan blades of the fan. In addition, pre-balanced spider assemblies can be employed as an alternative to balancing a fan after assembly.
REFERENCES:
patent: 2258459 (1941-10-01), Marbach
patent: 2853140 (1958-09-01), Forth, Sr.
patent: 2900202 (1959-08-01), Thompson
patent: 2912159 (1959-11-01), Granger et al.
patent: 2952102 (1960-09-01), Morrison et al.
patent: 3223313 (1965-12-01), Kinsworthy
patent: 3251540 (1966-05-01), Kinsworthy
patent: 3285502 (1966-11-01), Wooden
patent: 3407882 (1968-10-01), Wooden et al.
patent: 3498529 (1970-03-01), Wooden
patent: 3628888 (1971-12-01), Wooden
patent: 3708243 (1973-01-01), Wooden
patent: 3709633 (1973-01-01), Wooden
patent: 3773435 (1973-11-01), Wooden
patent: 3891349 (1975-06-01), Woollenweber, Jr.
patent: 3937595 (1976-02-01), English et al.
patent: 3963373 (1976-06-01), Macauley
patent: 4008007 (1977-02-01), Shipes
patent: 4025231 (1977-05-01), Kochevar et al.
patent: 4028007 (1977-06-01), Cavagnero et al.
patent: 4060338 (1977-11-01), Macauley
patent: 4063852 (1977-12-01), O'Connor
patent: D246856 (1978-01-01), O'Connor
patent: 4142844 (1979-03-01), Brattstrom
patent: 4147471 (1979-04-01), Charles
patent: 4172691 (1979-10-01), Comstock et al.
patent: 4174924 (1979-11-01), Smithson, Jr.
patent: 4189281 (1980-02-01), Katagiri et al.
patent: 4211514 (1980-07-01), Hawes
patent: 4245960 (1981-01-01), Matthews
patent: 4255080 (1981-03-01), Wilson et al.
patent: D262734 (1982-01-01), Wooden
patent: D262735 (1982-01-01), Wooden
patent: D262736 (1982-01-01), Wooden
patent: 4345877 (1982-08-01), Monroe
patent: 4350100 (1982-09-01), Stephenson
patent: 4358245 (1982-11-01), Gray
patent: 4406581 (1983-09-01), Robb et al.
patent: 4474534 (1984-10-01), Thode
patent: 4511308 (1985-04-01), Russell et al.
patent: 4548548 (1985-10-01), Gray
patent: 4566852 (1986-01-01), Hauser
patent: 4569631 (1986-02-01), Gray
patent: 4569632 (1986-02-01), Gray
patent: 4630999 (1986-12-01), De La Harpe
patent: 4634341 (1987-01-01), Monroe
patent: 4720244 (1988-01-01), Kluppel et al.
patent: 4840541 (1989-06-01), Sakane et al.
patent: 4900228 (1990-02-01), Yapp
patent: 4917572 (1990-04-01), Van Houten
patent: 4946348 (1990-08-01), Yapp
patent: 4971520 (1990-11-01), Van Houten
patent: 4995787 (1991-02-01), O'Connor
patent: 5000660 (1991-03-01), Van Houten et al.
patent: 5064345 (1991-11-01), Kimball
patent: 5151011 (1992-09-01), Rezek
patent: 5154579 (1992-10-01), Rezek
patent: 5156524 (1992-10-01), Forni
patent: 5156786 (1992-10-01), Monroe
patent: 5213476 (1993-05-01), Monroe
patent: 5221187 (1993-06-01), Lorea et al.
patent: 5297931 (1994-03-01), Yapp et al.
patent: 5326225 (1994-07-01), Gallivan et al.
patent: 5328330 (1994-07-01), Monroe
patent: 5342167 (1994-08-01), Rosseau
patent: 5352089 (1994-10-01), Tokunaga et al.
patent: 5423660 (1995-06-01), Sortor
patent: 5489186 (1996-02-01), Yapp et al.
patent: 5511939 (1996-04-01), Tokunaga et al.
patent: 5520515 (1996-05-01), Bailey et al.
patent: 5577888 (1996-11-01), Capdevila et al.
patent: 5616004 (1997-04-01), Alizadeh
patent: 5655882 (1997-08-01), Morgan et al.
patent: 5707205 (1998-01-01), Otsuka
patent: 5769607 (1998-06-01), Neely et al.
patent: 5979541 (1999-11-01), Saito
patent: 6059532 (2000-05-01), Chen et al.
patent: 6241474 (2001-06-01), Alizadeh et al.
patent: 6287078 (2001-09-01), Min et al.
patent: 6325597 (2001-12-01), Kim et al.
patent: 6447251 (2002-09-01), Zeng
patent: 935413 (1973-01-01), None
patent: 923474 (1973-03-01), None
patent: 973135 (1975-08-01), None
patent: 1050508 (1979-03-01), None
patent: 1067871 (1979-12-01), None
patent: 1071164 (1980-02-01), None
patent: 3707437 (1988-03-01), None
patent: 0259182 (1988-03-01), None
patent: 0408221 (1991-01-01), None
patent: 0761980 (1997-03-01), None
patent: 0857528 (1998-08-01), None
patent: 1572767 (1980-08-01), None
patent: 1577244 (1980-10-01), None
patent: 53-96512 (1978-08-01), None
Advanced Technologies, Low Noise Fan, Extra Fan newly Developed, A & R News, pp. 86-87, Jan./Feb. 1986.
Smart Housewares Highlights, Appliance Manufacturer, pp. 44-45, Mar. 2000.
Hext, III Richard G.
Pennington Donald R.
Look Edward K.
Michael & Best & Friedrich LLP
Revcor, Inc.
White Dwayne J.
LandOfFree
Fan assembly and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fan assembly and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fan assembly and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3422424